I WONDER - What Does The Immune System Do?

The video tutorial explains that antigens and pathogens, such as viruses, parasites, and bacteria, can make us ill by entering our bodies. It highlights the immune system's dual role in preventing diseases from entering and attacking those that do enter.

What are the substances that can make us ill?

What types of pathogens are mentioned in the text?

How do pathogens affect our health?

What are the two ways the immune system works?

What happens when pathogens enter our bodies?